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Unit 1:
Ch. 1
Ch. 2
Ch. 3
Interlude A
Unit 2:
Ch. 4
Ch. 5
Ch. 6
Ch. 7
Ch. 8
Ch. 9
Interlude B
Unit 3:
Ch. 10
Ch. 11
Ch. 12
Ch. 13
Ch. 14
Ch. 15
Interlude C
Unit 4:
Ch. 16
Ch. 17
Ch. 18
Ch. 19
Interlude D
Unit 5:
Ch. 20
Ch. 21
Ch. 22
Ch. 23
Ch. 24
Ch. 25
Ch. 26
Ch. 27
Ch. 28
Ch. 29
Ch. 30
Interlude E
Unit 6:
Ch. 31
Ch. 32
Interlude F
Unit 7:
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Ch. 34
Ch. 35
Ch. 36
Ch. 37
Ch. 38
Interlude G

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Biologists Uncover Darwin's Missing Evidence
Nature, 1 18 01

Biologists at the University of California–San Diego have demonstrated, in a study of the songs and genetics of a series of interbreeding populations of warblers in central Asia, how one species can diverge into two.

» Read the full article

Active Reading Questions

  1. fiogf49gjkf0d
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    The article discusses evolution in geographically isolated species. This discussion refers to ________________ speciation.
    a) allopatric
    b) sympatric
    c) incomplete
    d) convergent
  2. fiogf49gjkf0d
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    Scientists can always predict the rate at which new species will appear.
    a) true
    b) false
  3. fiogf49gjkf0d
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    What are ring species, and what do they have to do with allopatric speciation?
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